global: Migrate CONFIG_MXC_UART_BASE to CFG

Perform a simple rename of CONFIG_MXC_UART_BASE to CFG_MXC_UART_BASE

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/imx6dl-mamoj.h b/include/configs/imx6dl-mamoj.h
index 162b0b8..db08e43 100644
--- a/include/configs/imx6dl-mamoj.h
+++ b/include/configs/imx6dl-mamoj.h
@@ -35,7 +35,7 @@
 #include <config_distro_bootcmd.h>
 
 /* UART */
-#define CONFIG_MXC_UART_BASE		UART3_BASE
+#define CFG_MXC_UART_BASE		UART3_BASE
 
 /* MMC */